Endless screen conveyer



J. A. HOGG Jan. 15, 1935.

ENDLESS SCREEN CONVEYER Filed Oct. 14 1953 2 Sheets-Sheet l Jan. 15, 1935. J A. HOGG ENDLESS SCREEN CONVEYER Filed Oct. 14, 1953 2 Sheets-Sheet 2 Patented Jan. 15, 1935 V I memes-scum oh ivnimnf James-Albert Home; Lpweufi Caesar, "t

C. G. Sargents- Sons-Corporation; Graniteville, Mass.,}a-corporation of Massachusetts i v t Application -october 14;, 1933; Serial Na- 693,657

: zonin (o1 {19s+ 194 inventions-relates'toi-endless screen con extremities connectedttogether by stud shafts 2' veyers designed" for: supportingfmateriaLupon a and-upon: each 'or; these shafts 2 is mounted a f r t d r ti mtgdg onveyerJ roller 3. for coa'ction with the'usualtrackways uAn objector this"invention"isitoprovideza cone 1 (not shown). The-links '1 are relatively-long and,

fiveyer 'of. this' type 'whereinthesections of the asxhereinrdisclosed, :each of the=inner1inks com- 5 screen-"arepivotailyiconnectedvto'each otherin' prises apair of spaced parallel'memb'ers. The a verysimple manner and without thei necessity links: ofw each-complementary pair are provided of -usingipivot"pins which require'tol be insertedi therealong with inwardly disposed elongated or removed in order to join or disjoinathe screen supporting members 4 providing supports for the side=marginal portions of a 'screen' section S in-:

.A further object of'thisinvention'is to provide te'rposedibetween said' pair of links. The supaxconveyer ofi'this .kind. wherein each of'the porting'members 4 extend substantially from one screen-sections 'at one 'endthereof ist'angularly' end of: each innerlink to the otherbutterminate bent downwardto provide a stiffening means. for at such points aSitOiaSSuIe-nO hinderance or obl5f the conveyer; the downwardbend beingcoincistructionto"the desiredlarticulation of the screen dent with one of the transverseiz-wires of. the sections of thezconveyer and-moreespeciallywhen. screen section so thatithe transverse. wire with passingaround the periphery-of suitable drums" the longitudinal wiresdefines a seriesof eyes withv or wheels forguiding and; driving the conveyer.

which liooksonthe next'a'djacent screen'section' Resting z'upons-the..marginal portions of the may: engage, the downward bend-of the screen; screen section overlying the supporting members 20 section'acting to prevent any withdrawal'or pull-v 42ar'ethe lateral-flanges 5 defining the innerl loningco'utiofthis transversewire under the str'aini gitudinal ,marginal'iportions' of .the side wallsifi applied to thgscreen sections, t 1 w '1 preferably of sheet metal andwhich are'provided The novel features of my inventioniwilliheretokreta'inthe material-upon the screen. These 2511.inafterTbe definitely claimed. f1

ln 'orderl that mysinvention may be the better '7- or-rotlieri desired-fastening elements passing understoodfltiwi'llinowi proceedtoi'describe the through the flanges 5, the supporting members 4 samewithreference to the accompanying drawandr the interposed marginal portions of the ings-, wherein screensection S.

wallsi6'are heldin appliedi'position bytheibolts 'Figure 1 is a 'fragmentaryview inplan= of a The'e'xtrem'ities of theside vwallsfi have over- 30.

conveyerconstructed in accordance with an emlapping'end portions to form substantially'conbodiment of my invention; tinuous wall at each side of theconveyer. I

Figure 2 'is.a sectionalview=takensubstantially" Each of. the sections S comprises a series of" on-the='linef2-2.-of:Figure 1; longitudinally extending wires 8 and transverse Figure-3 is' axsectional view takenf substantially' wires i9rspaced'apart to-prov'idea mesh which is 35" 011131161 line": 3 -3 of: -Figure.2'; 1 illustrated in the accompanying drawings as -rec Figure 4' is a fragmentaryview in perspective tangular. At one endof the section S the longiof an 'en'dportion 0f: ascreen section as herein tudinal wires 8 extend free and unobstructeda employedgi i materialdistance beyon'd the adjacent end trans- 40I -,F 'ig\ire 5 is a'fragmentary' sectional view takenverse wire 9 and'said extended portions are r'e- 40 vertically through connected-portions o'fF screen" turned to provide inwardly facing hook members sections-illustrating another embodiment: of my 10, the'bill 10'- of'ea'choi which being at" the in'usier invention; i I 1 sideofthesection-S or that side of the section u szgi tii rj a mentary sectional view Sremotefrom the walls The'hook members through an end portion of a screen section con- 10 are arranged in a series extending transverse- 45 structed in accordance with another embodiment 1y of a section S at an end thereof and engaged of my invention; with a transverse wire 9 of an adjacent section Figure 7 is a fragmentary sectional view taken S through h y at the pp te ides of such through adjacent connected portions of screen transverse strand. The Wire 9 with which the sections and illustrating a still further embodihook members 10 engage is at a desired distance 50 ment of the invention. inwardly of the adjacent end of the fabric from As illustrated in the accompanying drawings, which the section is formed and the portions 8' the side chains C are endless and each of these of the strands 8 outwardly of this transverse wire chains C is formed of complementary pairs of 9 are angularly bent inward at substantially links 1. The links of adjacent pairs have their right angles whereby said portions 8 together 55 with the transverse strands 9 associated therewith provide a transverse strengthening member for said end portion of the section S.

As will be seen from Figure 4, the wire 9 which is coincident with the upper end of the downwardly bent portion 8, together with the wires 8, defines a series of horizontally disposed eyes with which the hooks 10 are adapted to engage and because, beyond this wire 9 the screen is bent downward or inward, as at 8', the wire 9 cannot be pulled out by any longitudinal strain on the screen sections. Thus, the wire 9 acts as the pintle or pivot pin upon which thescreen sections oscillate without the necessity of using a separate and distinct pivot pin for this purpose, thus doing away with the necessity of having to withdraw this pivot pin when it is desired to detach the screen sections from engagement with each other. Not only does this downward bend of the end of each screen section prevent the pulling out of the transverse wire 9'- but this angularly bent portion also constitutes a stiffening member, stiffening the screen across its entire extent. This is particularly necessary by reason of the fact that these screens are from six to eight feet. wide and are therefore very liable to sag at the middle unless the screen sections are stiffened.

Each of the sections S is of a length from the inner ends or bights of the hook members 10 to the transverse strand 9 with which the hook members of an adjacent section are adapted to engage substantially equal to the distance between the adjacent pivotal connections of the links so that in assembly of a conveyer the transverse wire 9 with which the hook members 10 of an adjacent section engage is substantially aligned with the axial centers of the stud shafts 2 which afford pivotal connection between adjacent links. a

As illustrated in Figure 6 of the accompanying drawings the portions 8" of the longitudinal wires of a screen section S are of a sufficient length to allow said portions to be returned back upon themselves whereby the resultant stiffening member for the screen section is'rigidly reinforced and additionally stifiened.

As illustrated in Figure 5 the strengthening member M, which is constructed the same as hereinbefore described with respect to the disclosure in Figures 1 to 4 inclusive, is rigidly reinforced and stiffened by a U-shaped metal member 11, the member M extending between the side walls 11 of said member 11. These side walls 11' are held to the member M by one or more rivets 12 or other desired fastening elements which extend through the side walls 11' and through the member M.

In the embodiment of the invention as illustrated in Figure 7 the screen section S at one end is provided with a stiffening portion 8 similar to that illustrated in Figure 5 but the transverse wire 9 at the top of said stiffening portion 8' instead of being engaged by hook memvey'erto readily pass over or around the drums or pulleys employed in connection with conveyers such as this. v

From the foregoing description it is thought to be obvious that an endless screen conveyer constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:-

1. A conveyer screen including a series of screen sections, each screen section consisting of longitudinal and transverse wires, all of the longitudinal wires at one end of the section being bent inward, the intersection of said bent portions of the longitudinal wires and the body of the screen being coincident with one of the transverse wires of the screen whereby the inwardly bent portions of the longitudinal wires prevent the pulling out of the said transverse wire under longitudinal strain on the section, the longitudinal wires at the opposite end of the section being bent inward and hooking over the said transverse wire.

2. A conveyer screen including a series of screen sections, each section consisting of interwoven longitudinal and transversewires, one end of the screen section being angularly bent downward entirely across the section to constitute a stiffener, the intersection of said bent portion and the body ofthe screen being in coincidence with one of the transverse wires of the screen whereby the last named transverse wire and the intersecting longitudinal wires immediately behind the bend define eyes disposed in the same plane as the body of the section and whereby the downwardly bent portion prevents the pulling out of the said transverse wire under longitudinal strain, the longitudinal wires at the opposite end of the section being reverted to form vertically disposed hooks to engage in the said eyes and over the said transverse wire which is coincident with the bend. a v

JAMES ALBERT HOGG. 

